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- W2085386918 endingPage "117" @default.
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- W2085386918 abstract "The BDNF val66met polymorphism (rs6265) influences activity-dependent secretion of brain-derived neurotrophic factor in the synapse, which is crucial for learning and memory. Individuals homozygous or heterozygous for the met allele have lower BDNF secretion than val homozygotes and may be at risk for reduced declarative memory performance, but it remains unclear which types of declarative memory may be affected and how aging of memory across the lifespan is impacted by the BDNF val66met polymorphism. This cross-sectional study investigated the effects of BDNF polymorphism on multiple indices of memory (item, associative, prospective, subjective complaints) in a lifespan sample of 116 healthy adults aged 20-93 years. Advancing age showed a negative effect on item, associative and prospective memory, but not on subjective memory complaints. For item and prospective memory, there were significant age×BDNF group interactions, indicating the adverse effect of age on memory performance across the lifespan was much stronger in the BDNF met carriers than for the val homozygotes. BDNF met carriers also endorsed significantly greater subjective memory complaints, regardless of age, and showed a trend (p<.07) toward poorer associative memory performance compared to val homozygotes. These results suggest that genetic predisposition to the availability of brain-derived neurotrophic factor, by way of the BDNF val66met polymorphism, exerts an influence on multiple indices of episodic memory - in some cases in all individuals regardless of age (subjective memory and perhaps associative memory), in others as an exacerbation of age-related differences in memory across the lifespan (item and prospective memory). This article is part of a Special Issue entitled Memory & Aging." @default.
- W2085386918 created "2016-06-24" @default.
- W2085386918 creator A5002283124 @default.
- W2085386918 creator A5008882760 @default.
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- W2085386918 creator A5026923082 @default.
- W2085386918 creator A5031833346 @default.
- W2085386918 creator A5051058343 @default.
- W2085386918 creator A5055333387 @default.
- W2085386918 creator A5075845832 @default.
- W2085386918 date "2015-07-01" @default.
- W2085386918 modified "2023-09-26" @default.
- W2085386918 title "BDNF val66met polymorphism affects aging of multiple types of memory" @default.
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